Adding 3 unstable Dlls to the blacklist.

tools/metrics/histograms/histograms.xml

Index: tools/metrics/histograms/histograms.xml
diff --git a/tools/metrics/histograms/histograms.xml b/tools/metrics/histograms/histograms.xml
index 0b3c15113ff19b6a6d8e999481a6743bd532698a..71e0fe8f291b362d05f4ebece6781e5a8337ed82 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -35916,9 +35916,11 @@ Therefore, the affected-histogram name has to have at least one dot in it.
 </enum>
 
 <enum name="DllHash" type="int">
-<!-- Generated by chrome_elf/dll_hash_for_uma/dll_hash_for_uma_main.cc -->
+<!-- Generated by chrome_elf/dll_hash/dll_hash_main.cc -->
 
+  <int value="141490347" label="minisp.dll"/>
   <int value="272828651" label="activedetect64.dll"/>
+  <int value="295718620" label="cespy.dll"/>
   <int value="750761702" label="systemk.dll"/>
   <int value="777975221" label="activedetect32.dll"/>
   <int value="803283353" label="lmrn.dll"/>
@@ -35928,6 +35930,7 @@ Therefore, the affected-histogram name has to have at least one dot in it.
   <int value="1270622879" label="hk.dll"/>
   <int value="1409376135" label="windowsapihookdll32.dll"/>
   <int value="1736709911" label="bitguard.dll"/>
+  <int value="2117903235" label="cplushook.dll"/>
   <int value="2132270559" label="libsvn_tsvn32.dll"/>
 </enum>